how lean of an afr can i go??

[edrag]

hey was just wondering how lean I can go on my vr4 4g63t powerd cordia its at 11.5 now but I want 12.0 on boost but I have been told this is to lean on boost? how far can I realy go. its a fresh forgie motor only done 1000ks now

 

[EV0300]

I think under 12 in wot is ideal but aslong as your not pinging or have early det you could go as high as the engine allows I would assume

 

[nigel_a]

i have mine set to 12. seen a few tuners do cars the same.

 

[caged]

Why? The power increase will be fuck all. Run it in the low to mid 11s on pump 98. Into the 12s on e85.

 

[croket]

Shit im down to 10.4 on 1.2 bar boost

 

[evo-gsr]

Thats rich ^

 

[4piknup]

Shit im down to 10.4 on 1.2 bar boost

Im the same. Fat as. But now my boost seems to be under control (and ive checked base timing) I can start chipping away. Till it pops.

 

[croket]

My problem is once i breach 1.3 or more i start to max injectors and dip into the mid to high 12s from 6000rpm onwards !!!! Think i might try bumping my fuel pressure a wee bit and see if i can get to 1.5 saftley while logging it also for knock

 

[EV0300]

^ 1 solution for that, bigger injectors

 

[evo-gsr]

Which are in my for sale thread! ^

 

[4piknup]

There is some bosch 1000 for sale on here for good price. Not sure if they are pnp or not. And of course jamo has some.
I got some bnib fic 1150s. Yay...

Is it injectors or pump? Maybe rewire the pump.

 

[croket]

pump is rewired 255 waly , im just getting to much air flow up top when the 272s really kick in , i know im i need of bigger injectors but pouring all efforts into mine and glens gsr galant at the moment .
Ive backed my boost dow to 1 bar but it feels so slow !!! I hate turbo cars always feeling the need for more power hahahaha